See http://www.bbc.co.uk/news/world-africa-29239604 . The World Bank believes the current Ebola outbreak could ruin many West African economies. The Ebola outbreak is killing thousands. President Obama has warned of the dangers to the world from it and has offered more troops.
There are some vaccines being tested, but it is early days for these. The real danger is if it spreads to more populated nations when further spreads could be even harder to contain. Imagine Ebola on a tube train.